280 FLORA INDICA.
ready to take every opportunity of improving our knowledge
of geograply. To the surveys of this corps, and in particular
to Captain Wilcox himself, we are indehted for all that is
known of -these countries.
Dfre Mislmi mountains, which 'occupy the most northerly
part, are tlse southern and western slopes of a mass of snowy
jcaoimtains. which sweep round the north-west of Assam feom
the east bawls: of the Dihong to the sources of th§ Dihing river.
The peaks of this chain are perhaps nowhere of great eleva-
tion as compared with-the Himalaya, though many are covered
with perpetual snow; and there are probably considerable de-
pressions, su at the source of the true Brahmaputra, which is
at the north-east angle of the chain, where the branch which
runs west, and bounds Mishini on the north, is given off.
These mountains rise dferuptly from the plain of Assam.
They have T>een visited bf Captain Wilcox and by Mr, Grif-
fith, to wten we are indebted for all our information regard-
ing their vegetation. The climate is extremely humid. The
rainy season is the same as in Assam, but heavy winter rains
occur, and -the air is usually extremely damp.
The northern valleys of the Mishmi country appear to be
included in Tibet, and from the accounts of the few travellers
who have grilled their lives in attempting to ascend them,
the Tibet frontier is gained in about fifteen days' march up
the Brahmaputra, from the Kund or sacred pool of that river.
Wilco:^ iucked, approached the frontier village of Taling;
and more recently a French missionary (M, Krick) reached
the same spot,, where he was forced to retire, owing to the
jealousy of lie authorities.
The flora corresponds very closely with that of Sikkim,
Bhotan, and the Khasia mountains, and affords every indi-
cation of constant humidity. The mountains, up to six thou-
sand feet, #re covered with a dense tropical forest, in which
Calami, Wal&chia, Areca, Caryota, and Arenga, are common,
•with,tree-fewLSi Pandanus, and Mma. Oaks, chesnuts, a wild
Thea,; Guttifwa, TUUtcea, Vivbenaeete, and Araliacea are eha~